HIGH SENSITIVITY REFRACTIVE INDEX SENSOR BASED ON METAMATERIAL ABSORBER | Zendy

Wei Zhang | Zendy; Jianying Li | Zendy; Jian Xie | Zendy

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HIGH SENSITIVITY REFRACTIVE INDEX SENSOR BASED ON METAMATERIAL ABSORBER

Author(s) -

Wei Zhang,

Jianying Li,

Jian Xie

Publication year - 2018

Publication title -

progress in electromagnetics research m

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.216

H-Index - 31

ISSN - 1937-8726

DOI - 10.2528/pierm18042903

Subject(s) - sensitivity (control systems) , refractive index , materials science , negative index metamaterials , metamaterial , optoelectronics , index (typography) , metamaterial absorber , optics , tunable metamaterials , physics , computer science , electronic engineering , world wide web , engineering

A metamaterial sensor is designed in this paper which can be used to detect the refractive index of an unknown dielectric loaded on the top surface of a metamaterial absorber. The resonant frequency of the absorber will be changed with various refractive indexes of the loaded dielectrics. Especially, the resonant frequency of the sensor is uniquely related to the refractive index of the unknown dielectric with the constant thickness, the linear relation of which is obtained by simulation fitting. A prototype of the absorber is manufactured and measured, which testify the design theory and simulation results. The Sfre of the proposed sensor is 0.3537 GHz/RIU, and the FoM can reach 11.0531 RIU−1.

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